The Niners, again, emphasized their commitment to power running today by signing fullback Bruce Miller, 26, to a three-year contract extension. Miller, a seventh-round pick in 2011, had career-highs in catches (25) and receiving yards (243) last year despite missing the final two games with a season-ending shoulder injury. …

Many of those who have exited since the end of the 2010 season have increased their bank account, but not their profile. In fact, of the six players listed below, it’s doubtful the 49ers have any regret about letting them get away. …